How to check if a Set is Not Empty in Kotlin

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How to check if a Set is Not Empty in Kotlin ?

Answer

To check if a Set is not empty in Kotlin, you can use the isNotEmpty function or compare the size to zero.

✐ Examples

1 Check if Set is Not Empty Using isNotEmpty Function

In this example,

We define a non-empty set named mySet containing elements of a specific type.
We use the isNotEmpty function to check if the set is not empty.
If the isNotEmpty function returns true, then the set is not empty; otherwise, it is empty.

Kotlin Program

fun main() {
    // Define non-empty set
    val mySet = setOf("apple", "banana", "orange")

    // Check if set is not empty using isNotEmpty function
    if (mySet.isNotEmpty()) {
        println("Set is not empty")
    } else {
        println("Set is empty")
    }
}

Output

Set is not empty

2 Check if Set is Not Empty Using size Property

In this example,

We define a non-empty set named mySet containing elements of a specific type.
We use the size property to get the number of elements in the set.
If the size is greater than zero, then the set is not empty; otherwise, it is empty.

Kotlin Program

fun main() {
    // Define non-empty set
    val mySet = setOf("apple", "banana", "orange")

    // Check if set is not empty using size property
    if (mySet.size > 0) {
        println("Set is not empty")
    } else {
        println("Set is empty")
    }
}

Output

Set is not empty

Summary

In this tutorial, we learned How to check if a Set is Not Empty in Kotlin language with well detailed examples.

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How to check if a Set is Not Empty in Kotlin

How to check if a Set is Not Empty in Kotlin ?

Answer

✐ Examples

1 Check if Set is Not Empty Using isNotEmpty Function

Kotlin Program

Output

2 Check if Set is Not Empty Using size Property

Kotlin Program

Output

Summary

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